1 files changed, 3 insertions, 1 deletions

diff --git a/lib/openid_message.cc b/lib/openid_message.cc
index 588bd62..75e59b3 100644
--- a/lib/openid_message.cc
+++ b/lib/openid_message.cc
@@ -213,10 +213,12 @@ namespace opkele {
     }
 
     string basic_openid_message::find_ns(const string& uri,const char *pfx) const {
-        if(has_field("ns"))
+        try {
             return get_ns(uri);
+        }catch(failed_lookup&) {
         return pfx;
     }
+    }
     string basic_openid_message::allocate_ns(const string& uri,const char *pfx) {
         if(!has_field("ns"))
             return pfx;